Update code to use email_enabled attribute instead of record presence

app/controllers/users_controller.rb

@@ -249,10 +249,9 @@ def change_settings(user_data, successful="users.update.settings_updated", error
   end
 
   def set_email_preferences
-    @email_prefs = Hash.new(true)
-
-    @user.user_preferences.each do |pref|
-      @email_prefs[pref.email_type] = false
+    @email_prefs = @user.user_preferences.to_h do |pref|
+      [pref.email_type, pref.email_enabled]
     end
+    @email_prefs.default = true
   end
 end

app/mailers/report_mailer.rb

@@ -16,7 +16,8 @@ def new_report(type, id, reason, role)
     person = Person.find(role.person_id)
     return unless person.local?
     user = User.find_by_id(person.owner_id)
-    return if user.user_preferences.exists?(email_type: :someone_reported)
+    return if NotificationSettingsService.new(user).email_disabled?(:someone_reported)
+
     I18n.with_locale(user.language) do
       resource[:email] = user.email
       format(resource)

app/models/notifications/mentioned_in_comment.rb

@@ -17,7 +17,7 @@ def self.filter_mentions(mentions, mentionable, _recipient_user_ids)
     end
 
     def mail_job
-      if !recipient.user_preferences.exists?(email_type: "mentioned_in_comment")
+      if NotificationSettingsService.new(recipient).email_enabled?(:mentioned_in_comment)
         Workers::Mail::MentionedInComment
       elsif shareable.author.owner_id == recipient_id
         Workers::Mail::CommentOnPost

app/models/user.rb

@@ -180,20 +180,18 @@ def send_reset_password_instructions
 
   def update_user_preferences(pref_hash)
     if self.disable_mail
-      UserPreference::VALID_EMAIL_TYPES.each{|x| self.user_preferences.find_or_create_by(email_type: x)}
+      UserPreference::VALID_EMAIL_TYPES.each do |type|
+        user_preferences.find_or_create_by(email_type: type).update(email_enabled: false)
+      end
       self.disable_mail = false
       self.save
     end
 
     pref_hash.keys.each do |key|
-      if pref_hash[key] == 'true'
-        self.user_preferences.find_or_create_by(email_type: key)
-      else
-        block = user_preferences.find_by(email_type: key)
-        if block
-          block.destroy
-        end
-      end
+      email_enabled = pref_hash[key] == "false"
+      user_preferences
+        .find_or_create_by(email_type: key)
+        .update(email_enabled: email_enabled)
     end
   end
 
@@ -354,9 +352,10 @@ def perform_export_photos!
   def mail(job, *args)
     return unless job.present?
     pref = job.to_s.gsub('Workers::Mail::', '').underscore
-    if(self.disable_mail == false && !self.user_preferences.exists?(:email_type => pref))
-      job.perform_async(*args)
-    end
+    email_enabled = (disable_mail == false) &&
+      NotificationSettingsService.new(self).email_enabled?(pref)
+
+    job.perform_async(*args) if email_enabled
   end
 
   def send_confirm_email

app/services/notification_settings_service.rb

@@ -0,0 +1,32 @@
+# frozen_string_literal: true
+
+class NotificationSettingsService
+  def initialize(user)
+    @user = user
+  end
+
+  def email_disabled?(notification_type)
+    !email_enabled?(notification_type)
+  end
+
+  def email_enabled?(notification_type)
+    notification_enabled?(notification_type, :email_enabled?)
+  end
+
+  def in_app_enabled?(notification_type)
+    notification_enabled?(notification_type, :in_app_enabled?)
+  end
+
+  private
+
+  attr_reader :user
+
+  delegate :user_preferences, to: :user
+
+  def notification_enabled?(notification_type, pref_method)
+    pref = user_preferences.find_by(email_type: notification_type)
+    return true if pref.nil?
+
+    pref.public_send pref_method
+  end
+end